Furnace-grate.



FERDINAND LANG, or COLOR-ADO SPRINGS, ooron-nno.

FURN CE-snare.

Specification of Letters Patent.

Patented Dec. 7, 1915.

Application filed Novembe128,.1914. Serial N 0. 374,432.

To all whom it may concern: I

Be. it known that, I, FERDINAND LANG, subject of the Czar of Russia, residing at Colorado Springs, 7 and State of Colorado, have invented certain new and useful Improvements in Fun mace-Grates, of which the following is ,a'

specification. I

This inventionrelates to grates for furnaces, and its object is to provide a novel and improved form of grate bar structure which renders the same strong and durable and not liable to warp or, sag. I v

A further object of the invention is to provide a novel and'improved .1neans,whereby the grate bars may be operated'independently, a coupling being provided which enables any one of the grate bars to be disconnected from the operating means.

These objects are attained by means of a combination and arrangement of parts tov be hereinafter described and olaimedreference being had to theaccompanymg drawing, in Wl1lCl1 Figure 1 is a plan view of the grate; Fig.1

a cross section on the line A.-B of Fig. I 1; Fig. 3 1s a cross section on the line CQD of Fig. 1; Fig. 4c is an elevation of the grate-operating mechanism; Fig. 5 is an end view of said mechanism, and Fig.6 is an elevation of a coupling pin employed in connection with the nism. I

Referring specifically to the drawing, 9 denotes the ash-pit of the furnace, the same having an upstanding top flange 8 within which seats the fire-box 19. The ash-pit is provided with a door 10. The fire box may be round, square or otherwise shaped.

The grate bars are indicated at 1, the same having trunnions 3 and 3, respectively, at their ends, whereby they are rotatably supported. The ashpit 9 has seats 2 for the trunnions, said seats being on a depend ing annular flange 2 located at the center of the top of the fire box and extending around the opening over which the fire-pot 19 seats. Cross pins 3 abovethe trunnions 3 at the rear ends of the grate bars hold said trunnions down on-their seats. The trunnions 3 at the front ends ofthe grate bars pass loosely through apertures in the flange 2 and project outside the; latter. In the fire pot are projecting lugs i for the mismatch ing parts of the grate.

The following grate-operating means are in the county of El Paso grate-operating, mechadumping the fire.

provided: To the projecting end of each.

trunnion 3 is. connected a short rock-shaft 6, the latter of the ash-pit 9 and its inner socket 5 tov receive the end of said trunnion end and the socket being angih lar in cross section so that when the shaft is rocked, the grate is also rocked. Endwise separation of the shaft and the trunnion is preventedby a cross pin 7 passing through the former adjacent to the inside of the ashpit side wall as shown in Fig. 2. To each rock-shaft is connected a crank or rocker arm 11. Theconnection is made-by means of a pin 12 running through the rock shaft and the crank, said pin being threaded and provided with r 6, so that'it can be readily removed without the use of a tool. The pins are made remove able in order that any one of the cranks may be uncoupled from its shaft, for pose to be presently described. The

end having a cranks areconnected by an operating bar 13. which latter is connected at one end j, by a link 1a to a hand lever 15 supported by a bracket 18 on the ash-pit 9. v The, cranks are'heavier at the top than at the bottom to counterbalance the latter, to which the bar 13 is connected.

Upon operating the hand lever 15 back and forth, the grate bars 1 are shaken, the motion of the lever being transmitted to the trunnions 3 by the link 14:, the bar 13, the cranks 11 and the shafts 6. The grate bars can also be dumped by pushing or pulling the hand lever back as far asit will go. The grate can also 'be inverted without This is done by raking the fire over to one side, and then removing the pins 12 from the cranks 11 of the grate bars on which the fire rests to uncouple said being journaled in the side wall the trunnion,

a that head, as shown in Fig.

a pur- The other grate bars can then be inverted, I

after which the coupling pins are replaced, and the fire is raked back on the clean grate bars, and then taking outthe coupling pins from the cranks of now on, the grate bars free of the fire are inverted, and more coal can be added to the fire. 'Allthe grate bars can be dumped or inverted simultaneously by letting all the coupling pins remain.

The ash-pit 9 carries a pivoted latch 16 for locking the hand lever 15, said latch being shaped to straddle the lever as shown in Fig. 1. the lever,

Upon swinging the latch clear of the latter may be actuated to opthe grate bars the fire is trunnions on erate the grate bars as hereinbefore de scribed.

The grate bars are solid throughouttheir center; along their entire length, and they are also thicker at the middle than at the edge, the thickness gradually decreasing longitudinally and transversely. This stiifens the bars, and they are not liable to warp or sag. The grate bars can also be reversed if they become worn on oneside, as their top and bottom portions are counterparts.

I claim V a 81'. The combination With a furnace having a depending annular flange at the bot tom of the fire boX; of grate bars extending bars seat and are coupled to turn with said rock shafts,'cross pins, carried by the rock shafts adjacent to the side wall of the ash pit for locking the rock shafts against end- .wise movement in a direction to become dis,

engaged from the trunnions of the grate and uniformly v nions of the grate shafts on the outside of the ash pit, an oper ating bar connecting the cranks, and actubars, cranks on the rock shafts on the outside ofthe ash pit, an operating bar connecting the cranks, and actuating meansfor said bar.

2. The combination with a furnace having a depending annular flange at the bottom of the fire box; of grate bars extending across the flange and having end trunnions, the flange having seats for the trunnions and apertures through which the trunnions' onthe front ends of the grate bars loosely pass, rock shafts journaled in the side wall of the'ashvpit of the furnace in'axial aline-- of the respective men-t with the trunnions grate bars and having sockets'in their inner ends in'which-the trunnions on the front 7 ends of the grate bars seat and are coupled to turn with said rock shafts, cross pins carriedby the rock shafts adjacent to the side Wall of the ash pit for locking the rock shafts against endwise movement in a'direction to become disengaged from the trunbars, cranks on the rock ating means for said'bar.

In testimony whereof I aflix my signature in presence of two witnesses.

FERDINAND LANG.

Witnesses r R. L. PmrMErnR, I I H. CATHERINE WVILLIA S.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent 1 washingtomnc. 

